After two weeks of training camp, trainer Freddie Roach is confident WBO welterweight Manny Pacquiao will knock Joshua Clottey out on March 13 at Cowboys Stadium in Texas. Roach has been looking at tapes on Clottey and he doesn't think the fighter from Ghana is really that good. He overestimated his worth the first time around and thought Pacquiao would win a decision. Now he thinks Clottey will get stopped in the last rounds.

“Manny will knock him out," Roach said to GMA News. “I’ve been studying tapes of him (Clottey), (and) he’s not very good. I think if we break him (Clottey) down, we can get him out of there in the late rounds.

“He (Clottey) has a passive defense and leaves his body wide open for a while when he puts his hands up like that. When we dig to the body and break him down, I think we can get him out of there."

Clottey will be the bigger man and there is some concern about the size. Roach says size will not win a fight. He says ability wins fights.

“It (Clottey’s size) is always a concern, of course. But the thing is, going into the ring, my guy (Pacquiao) is going to be about 149 (lbs) and the other guy will is going to have to be about 10-12 pounds on him and be bigger. But size doesn’t win fights. Ability does!" Roach said.